Ok I saw this youtube video called
2015 Ford Fusion coolant flush
Its a very short video.
here is the link
In this video he shows how to flush coolant. It is not very detailed however. I am curious as to what he did with the other hose he detached from the reservoir. Did he cap it off or something? Also he isn’t showing the whole start to finish. When do you do the filling? Do you just add fluid in the pressure cap hole? Did he make any changes to those hoses he disconnected? Looks like he detached the one hose on the top there and then did what with the other end of it? Then he detached the end of the hose for the vent line at the top of the radiator where it runs to and then draped it over to drain in the bucket. Wish he went into the procedure in way more detail and explained all those lines and what is happening exactly. If anyone knows about this procedure can you explain in some nice detail for us all? Thanks in advance. Van.